Current Search: ETD Collection (x)
View All Items
(81 - 100 of 7,047)
Pages
- Title
- A CASE STUDY: ALTERNATIVE CERTIFICATION.
- Creator
-
Marshall, Neleffra, Pawlas, George, University of Central Florida
- Abstract / Description
-
This study was a heuristic, descriptive case study of the Alternative Certification Program in 4 central Florida counties. The purpose of this study was to: (a) identify the awareness of the existence of the reported alternative certification components implemented by 4 counties in Florida, and identify any additional components; (b) determine the importance of the targeted teaching criteria needed for successful teaching as identified in the literature to the ACP teacher, principal and...
Show moreThis study was a heuristic, descriptive case study of the Alternative Certification Program in 4 central Florida counties. The purpose of this study was to: (a) identify the awareness of the existence of the reported alternative certification components implemented by 4 counties in Florida, and identify any additional components; (b) determine the importance of the targeted teaching criteria needed for successful teaching as identified in the literature to the ACP teacher, principal and coordinator; (c) determine the advantages/disadvantages of the program as viewed by the ACP participants, principals, and coordinators; (d) identify how many of the 4 counties kept data on participants entering and leaving the program; (e) determine how many participants exited the ACP before completion; and (f) identify if a particular subject area had a higher percentage of ACP teachers. The study was based on data gathered using the Alternative Certification Program Survey, a survey created by the researcher. The population for this study was 4 public school districts in central Florida. The completed surveys yielded a usable return rate of 41% (N= 258). The researcher conducted the data analysis. Descriptive statistics were used to analyze the data. Results were presented as a whole, as well as disaggregated and presented by county. Analysis of the data revealed: (a) that the awareness of the ACP components varied between counties and respondent groups of teacher participants, principals, and coordinators; (b) the teachers and principals did not agree on rating the importance of the teaching criteria needed for an ACP teacher to be successful, and the coordinators rated all the criteria equally; (c) the perceptions of advantages of the ACP differed between the teacher participants, principals, and coordinators; (d) the perceptions of disadvantages of the ACP differed between the teacher participants, principals, and coordinators; (e) three of the counties kept entrance and exit data on the ACP; (f) one county had <1% non-completion rate for ACP participants; and (g) highest number of ACP participants were entering into the subject areas of math and science. Conclusions, recommendations for future research, and recommendations for alternative certification in central Florida were made. One recommendation for further research was for a study to be replicated with ACP teachers hired for another school year, and repeated in future years, to gather information concerning awareness of the existence of the ACP components, importance of teaching criteria needed for successful teaching, and advantages/disadvantages of the program as perceived by the teacher participants, principals, and coordinators. Another recommendation for future research was to replicate and conduct this study in other Florida counties in order to compare results with those of this study concerning the Alternative Certification Program.
Show less - Date Issued
- 2006
- Identifier
- CFE0001388, ucf:47003
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001388
- Title
- A Causal Comparative Analysis of a Computer Adaptive Mathematics Program Using Multilevel Propensity Score Matching.
- Creator
-
Seabolt, Justin, Sivo, Stephen, Bai, Haiyan, Swan, Bonnie, Vitale, Thomas, University of Central Florida
- Abstract / Description
-
The purpose of this study was to examine the effectiveness of a computer adaptive mathematics program, i-Ready(&)#174; Mathematics Instruction in Central Florida School District (CFSD) using a variety of quantitative analyses. In particular, students in the fifth grade at CFSD were examined in relation to the gains made on their end-of-year statewide mathematics assessment, known as the Florida Standards Assessment (FSA Math). Per i-Ready(&)#174;, students who use i-Ready(&)#174; Mathematics...
Show moreThe purpose of this study was to examine the effectiveness of a computer adaptive mathematics program, i-Ready(&)#174; Mathematics Instruction in Central Florida School District (CFSD) using a variety of quantitative analyses. In particular, students in the fifth grade at CFSD were examined in relation to the gains made on their end-of-year statewide mathematics assessment, known as the Florida Standards Assessment (FSA Math). Per i-Ready(&)#174;, students who use i-Ready(&)#174; Mathematics Instruction for a minimum of 45 minutes per subject per week for at least 25 weeks show significantly greater gains than those who do not (Curriculum Associates, 2017b). Therefore, two propensity score matching methods (one considering the multilevel structure of the data) were examined and compared to split students into the following two comparison groups: those who used the program with fidelity and those who did not. Next, a series of multilevel models, using both propensity score matching methods, and dependent t-tests were examined to evaluate the effectiveness of i-Ready(&)#174; Mathematics Instruction. In conclusion, the use of the multilevel propensity score matching technique yielded a better fit for explaining the variation in relation to gains students in the fifth grade made on the FSA Math assessment. Additionally, i-Ready(&)#174; Mathematics Instruction did positively impact fifth grade students in Central Florida School District who used the program with fidelity with relation to their FSA Math score gains, compared to those who did not use the program with fidelity.
Show less - Date Issued
- 2018
- Identifier
- CFE0007245, ucf:52210
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007245
- Title
- A chemical and genetic approach to study the polyamine transport system in Drosophila.
- Creator
-
Wang, Minpei, Vonkalm, Laurence, Phanstiel, Otto, Teter, Kenneth, Ballantyne, John, University of Central Florida
- Abstract / Description
-
Polyamines are small cationic molecules that play important roles in most vital cellular processes including cell growth and proliferation, regulation of chromatin structure, translation and programmed cell death. Cellular polyamine pools are maintained by a balance between biosynthesis and transport (export and import). Increased polyamine biosynthesis activity and an active transport system are characteristics of many cancer cell lines, and polyamine depletion has been shown to be a viable...
Show morePolyamines are small cationic molecules that play important roles in most vital cellular processes including cell growth and proliferation, regulation of chromatin structure, translation and programmed cell death. Cellular polyamine pools are maintained by a balance between biosynthesis and transport (export and import). Increased polyamine biosynthesis activity and an active transport system are characteristics of many cancer cell lines, and polyamine depletion has been shown to be a viable anticancer strategy. Polyamine levels can be depleted by ?-difluoromethylornithine (DFMO), an inhibitor of the key polyamine biosynthesis enzyme ornithine decarboxylase. However, malignant cells often circumvent DFMO therapy by up-regulating polyamine import; therefore, there is a need to develop compounds that inhibit polyamine transport. Collectively, DFMO and polyamine transport inhibitors provide the basis for a combination therapy leading to effective intracellular polyamine depletion. Using a Drosophila leg imaginal disc model for polyamine transport, I studied three candidate transport inhibitors (Ant444, Trimer44 and Triamide44) for their ability to inhibit transport in the Drosophila model. Ant444 and Trimer44 effectively inhibited the uptake of the toxic polyamine analog Ant44 that gains entry to cells via the polyamine transport system. Ant444 and Trimer44 were also able to inhibit the import of exogenous polyamines into DFMO-treated imaginal discs. Triamide44 was an ineffective inhibitor, however a structurally redesigned compound, Triamide444, showed a 50-fold increase in transport inhibition and was comparable to Ant444 and Trimer44. Ant444 and Trimer44 showed differences in their relative abilities to block import of specific polyamines, and I therefore asked if a cocktail of these inhibitors would be more effective than either alone. My data show that a cocktail of polyamine transport inhibitors is more effective than single inhibitors when used in combination with DFMO, and suggests the existence of multiple polyamine transport systems. To further the development of effective transport inhibitors it is important to identify components of the transport system. The mechanism of polyamine transport in multicellular organisms including mammals is still unknown. Our laboratory has developed a simple assay to detect components of the transport system using RNAi knockdown and over-expression of candidate genes. However, the assay requires that animals live until the pupal stage of development. Pleiotropic effects of individual gene products following over-expression or knockdown may result in early developmental lethality for reasons unrelated to polyamine transport. Our assay is based on the GAL4/UAS system and involves the use of enhancers driving GAL4 expression (GAL4 driver). GAL4 in turn determines the expression level of UAS-candidate gene constructs (UAS responder). I reasoned that in some cases it might be possible to bypass early lethality by judicious choice of drivers that reduce responder expression, thus permitting survival to the pupal phase. To this end, I used five imaginal disc drivers (30A, 71B, 32B, 69B, and T80) as well as a ubiquitously expressed control driver to over-express and knockdown EGFR and components of the Rho signaling pathway. The relative strength of each driver was ranked, and I was able to demonstrate in principle that animals could survive to later stages of development in a manner that correlated with the relative strength of the driver. The approach I developed is broadly applicable to other studies of Drosophila development.To identify new components of the polyamine transport system I studied the role of proteoglycans in this process. The proteoglycan glypican-1 has been previously implicated in mammalian polyamine transport. In particular, the heparin sulfate side chains of glypican-1 appear to play an important role. In order to extend our knowledge of the role of proteoglycans in polyamine transport, I examined the role of the core proteoglycans perlecan and syndecan as well as genes encoding enzymes in the heparin sulfate and chondroitin sulfate biosynthetic pathways. I was able to confirm a role for glypican-1 in polyamine transport in imaginal discs but not in whole animals. This may indicate that glypican-1 is not required for polyamine uptake through the gut. Studies of genes encoding perlecan, syndecan and enzymes in the heparin sulfate and chondroitin sulfate biosynthetic pathways did not reveal a role for these genes in polyamine transport. These studies were conducted in whole animals and my data may reflect tissue-specific differences between the imaginal disc and gut transport systems where transport in imaginal discs is proteoglycan dependent and transport in the gut is not.
Show less - Date Issued
- 2017
- Identifier
- CFE0007297, ucf:52162
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007297
- Title
- A CHORUS LINE: DOES IT ABIDE BY RULES ESTABLISHED BY ACTORS' EQUITY ASSOCIATION FOR THE AUDITION PROCESS?.
- Creator
-
Hardin, Mark, Weaver, Earl, University of Central Florida
- Abstract / Description
-
I have been cast as "Bobby" in A Chorus Line at Orlando Broadway Dinner Theatre in Orlando. I will use this opportunity as my thesis role. As part of my thesis defense, I will combine an analysis of the character of "Bobby" in A Chorus Line with an assessment of Actors' Equity Association's audition policies from 1970 to the present, and investigate whether the audition held in the show abides by the policies established by AEA for Broadway calls. "Bobby" has an interesting arc of development...
Show moreI have been cast as "Bobby" in A Chorus Line at Orlando Broadway Dinner Theatre in Orlando. I will use this opportunity as my thesis role. As part of my thesis defense, I will combine an analysis of the character of "Bobby" in A Chorus Line with an assessment of Actors' Equity Association's audition policies from 1970 to the present, and investigate whether the audition held in the show abides by the policies established by AEA for Broadway calls. "Bobby" has an interesting arc of development as he actually gives the director what he (the director) does not want, yet is still cast in the fictitious Broadway show. Why he would choose to stray from the director's instructions is an interesting question and demanding study. To facilitate my research on the character (aside from script and score analysis), I will interview Thommie Walsh (about for whom the role was written and the original "Bobby" on Broadway) as well as other men who have played the role to get insights into the character that will enhance my performance. Mr. Walsh will also elaborate on his real-life relationship with Michael Bennett and how that compares and contrasts with the relationship between "Bobby" and "Zach." I also will interview as many of the original cast members as possible (namely Baayork Lee) to get contributing memories and anecdotal evidence from the original production. A Chorus Line captures the one element all performers experience – the audition. The audition process has changed over the years, and I will focus on the development of protocol from the early 1970's (when A Chorus Line takes place) to the present. I will explore the manner in which the process has evolved and what A Chorus Line's contribution was (if any) to that process. This show has become so much a part of the musical theatre vernacular that historical exploration of procedures would also clarify how this work was structured. Were actors subjected to that intense style of audition on a huge stage in the early 1970s? Are they still today? My research will trace the history and rules governing auditions, performers and staff as delineated by Actors' Equity Association. I will also include a comparison of Equity to the variety of non-Equity auditions. Other sources will include rulebooks from AEA and interviews with dancers (past and present), AEA staff and Patrick Quinn, President of AEA.
Show less - Date Issued
- 2006
- Identifier
- CFE0000927, ucf:46753
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000927
- Title
- A Clutch, A Pride, A Murder.
- Creator
-
Miles, John, Rushin, Patrick, Neal, Mary, Poissant, David, University of Central Florida
- Abstract / Description
-
A Clutch, A Pride, A Murder is a linked collection of seven short fiction pieces and one novella that examine a world much like our own, but with the cover revealed(-)a world laid bare, exposed by its desires, its emotions, its beauties, and all its machinations. All of the stories involve, either directly or indirectly, the fictional Ohio city of Milton. Some of the stories take place within this seemingly typical American city, while others only involve characters coming from or in some...
Show moreA Clutch, A Pride, A Murder is a linked collection of seven short fiction pieces and one novella that examine a world much like our own, but with the cover revealed(-)a world laid bare, exposed by its desires, its emotions, its beauties, and all its machinations. All of the stories involve, either directly or indirectly, the fictional Ohio city of Milton. Some of the stories take place within this seemingly typical American city, while others only involve characters coming from or in some cases returning to this unassuming location. Regardless, the events of these stories either in cause or effect all have their roots in Milton.The world at large also plays a part within these pages. While the stories themselves are completely fictitious, many of the peripheral events that happen beyond the principle storylines are pulled from today's real-world headlines: a series of increasingly devastating tornadoes in the American heartland; a mysterious suicide of a wealthy industrialist; the amazing technological feats of a nation's space program; the heinous crimes of a serial kidnapper. These events, each a worthy story in their own right, filter into the events of this collection, much as they do in our world(-)through the media. Television, radio, newspapers, social media all are outlets of information and current events making the stories of others part of our lives as we all live out our own personal adventures. I utilize these true-life events to add scope and breadth to the world of my fictions so that these events might at times inform and offer new perspective on the principle narratives. And while these true-life stories unfold in the backgrounds of their fictitious hosts, the hope is that the reader will be able to have a better sense of the timeline as the events unfold over the days, months, and years that these stories inhabit.Humanity in all its wonder and woe is on full display within this collection. From the journey of idyllic love to tragic romance, and the thin line that turns passion to obsession, we will see all the places theses complex emotions lead: a young botanist travels half-way around the world for a chance to reconnect with a lost love; a young girl's love for her family pushes her to extremes to protect her brother; a man's love for his city challenges his morality; the bond between brothers is put to the test; and a young man's reverence for history, and his love of family leads him down a dark path. How far will someone go to protect themselves? Their loved ones? Or even their way of life? The lengths these characters will go, or in some cases will not go, are central to the stories in this collection. I intend to show those lengths and tell my characters' all too human stories.?
Show less - Date Issued
- 2013
- Identifier
- CFE0005034, ucf:49988
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005034
- Title
- A COMMON COMPONENT-BASED SOFTWARE ARCHITECTURE FOR MILITARY AND COMMERCIAL PC-BASED VIRTUAL SIMULATION.
- Creator
-
Lewis, Joshua, Proctor, Michael, University of Central Florida
- Abstract / Description
-
Commercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources,...
Show moreCommercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources, standards, and technology of the computer entertainment industry and military training branches. This research attempts to identify these commonalities with the purpose of systematically designing and evaluating a common component-based software architecture that could be used to implement a framework for developing content for both commercial and military virtual simulation software applications.
Show less - Date Issued
- 2006
- Identifier
- CFE0001268, ucf:46893
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001268
- Title
- A COMMON COMPONENT-BASED SOFTWARE ARCHITECTURE FOR MILITARY AND COMMERCIAL PC-BASED VIRTUAL SIMULATION.
- Creator
-
Lewis, Joshua, Proctor, Michael, University of Central Florida
- Abstract / Description
-
Commercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources,...
Show moreCommercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources, standards, and technology of the computer entertainment industry and military training branches. This research attempts to identify these commonalities with the purpose of systematically designing and evaluating a common component-based software architecture that could be used to implement a framework for developing content for both commercial and military virtual simulation software applications.
Show less - Date Issued
- 2006
- Identifier
- CFE0001177, ucf:46868
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001177
- Title
- A COMPARATIVE ANALYSIS BETWEEN CONTEXT-BASED REASONING (CXBR) AND CONTEXTUAL GRAPHS (CXGS).
- Creator
-
Lorins, Peterson, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
-
Context-based Reasoning (CxBR) and Contextual Graphs (CxGs) involve the modeling of human behavior in autonomous and decision-support situations in which optimal human decision-making is of utmost importance. Both formalisms use the notion of contexts to allow the implementation of intelligent agents equipped with a context sensitive knowledge base. However, CxBR uses a set of discrete contexts, implying that models created using CxBR operate within one context at a given time interval. CxGs...
Show moreContext-based Reasoning (CxBR) and Contextual Graphs (CxGs) involve the modeling of human behavior in autonomous and decision-support situations in which optimal human decision-making is of utmost importance. Both formalisms use the notion of contexts to allow the implementation of intelligent agents equipped with a context sensitive knowledge base. However, CxBR uses a set of discrete contexts, implying that models created using CxBR operate within one context at a given time interval. CxGs use a continuous context-based representation for a given problem-solving scenario for decision-support processes. Both formalisms use contexts dynamically by continuously changing between necessary contexts as needed in appropriate instances. This thesis identifies a synergy between these two formalisms by looking into their similarities and differences. It became clear during the research that each paradigm was designed with a very specific family of problems in mind. Thus, CXBR best implements models of autonomous agents in environment, while CxGs is best implemented in a decision support setting that requires the development of decision-making procedures. Cross applications were implemented on each and the results are discussed.
Show less - Date Issued
- 2005
- Identifier
- CFE0000577, ucf:46433
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000577
- Title
- A COMPARATIVE ANALYSIS OF DIFFERENCES IN RESIDENT SATISFACTION, RETENTION, AND CUMULATIVE GRADE POINT AVERAGE BETWEEN UNIVERSITY OF CENTRAL FLORIDA OWNED AND AFFILIATED HOUSING.
- Creator
-
Novak, Jeffrey, Taylor, Rosemarye, University of Central Florida
- Abstract / Description
-
This study compared students' perceptions and satisfaction as they related to their place of residence. In addition, this study sought to determine if a difference existed between student retention rates from their first year in college to their second year and one's grade point average with respect to one's place of residence within the collegiate setting. As such, the problem this study examined was the overall impact of where a first-time-in-college student lived within the...
Show moreThis study compared students' perceptions and satisfaction as they related to their place of residence. In addition, this study sought to determine if a difference existed between student retention rates from their first year in college to their second year and one's grade point average with respect to one's place of residence within the collegiate setting. As such, the problem this study examined was the overall impact of where a first-time-in-college student lived within the University of Central Florida housing system and how that living environment impacted students' levels of satisfaction, overall retention rates, and cumulative grade point averages. The data used for this study were obtained from a previously distributed survey conducted by the Department of Housing and Residence Life at the University of Central Florida in February 2007. Secondary data were obtained through the Department of Institutional Research at the University of Central Florida. A website link to an optional, self-administered Internet-based survey was sent via email to University of Central Florida students residing in university owned housing and university affiliated housing. The size of the sample was determined by the number of delivered emails 3800 for university owned housing, 1,500 for university affiliated housing (Towers), and 1,831 for university affiliated housing (Pegasus Landing). Of the total populations: 1) 38.57 percent were returned for university owned housing, 2) 26.26 percent were returned for university affiliated (Towers at Golden Knights Plaza), and 3) 24.63 percent were returned for university affiliated housing (Pegasus Landing). There were many statistically significant relationships. Consistently, students residing in university owned housing showed higher satisfaction and agreement levels when compared with students living in university affiliated housing. Additionally, students living in university owned housing showed a higher retention rate and cumulative grade point average when compared with students living in university affiliated housing.
Show less - Date Issued
- 2008
- Identifier
- CFE0002245, ucf:47894
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002245
- Title
- A comparative analysis of different Dilemma Zone countermeasures at signalized intersections based on Cellular Automaton Model.
- Creator
-
Wu, Yina, Abdel-Aty, Mohamed, Lee, JaeYoung, Eluru, Naveen, University of Central Florida
- Abstract / Description
-
In the United States, intersections are among the most frequent locations for crashes. One of the major problems at signalized intersection is the dilemma zone, which is caused by false driver behavior during the yellow interval. This research evaluated driver behavior during the yellow interval at signalized intersections and compared different dilemma zone countermeasures. The study was conducted through four stages.First, the driver behavior during the yellow interval were collected and...
Show moreIn the United States, intersections are among the most frequent locations for crashes. One of the major problems at signalized intersection is the dilemma zone, which is caused by false driver behavior during the yellow interval. This research evaluated driver behavior during the yellow interval at signalized intersections and compared different dilemma zone countermeasures. The study was conducted through four stages.First, the driver behavior during the yellow interval were collected and analyzed. Eight variables, which are related to risky situations, are considered. The impact factors of drivers' stop/go decisions and the presence of the red-light running (RLR) violations were also analyzed. Second, based on the field data, a logistic model, which is a function of speed, distance to the stop line and the lead/follow position of the vehicle, was developed to predict drivers' stop/go decisions. Meanwhile, Cellular Automata (CA) models for the movement at the signalized intersection were developed. In this study, four different simulation scenarios were established, including the typical intersection signal, signal with flashing green phases, the intersection with pavement marking upstream of the approach, and the intersection with a new countermeasure: adding an auxiliary flashing indication next to the pavement marking. When vehicles are approaching the intersection with a speed lower than the speed limit of the intersection approach, the auxiliary flashing yellow indication will begin flashing before the yellow phase. If the vehicle that has not passed the pavement marking before the onset of the auxiliary flashing yellow indication and can see the flashing indication, the driver should choose to stop during the yellow interval. Otherwise, the driver should choose to go at the yellow duration. The CA model was employed to simulate the traffic flow, and the logistic model was applied as the stop/go decision rule. Dilemma situations that lead to rear-end crash risks and potential RLR risks were used to evaluate the different scenarios. According to the simulation results, the mean and standard deviation of the speed of the traffic flow play a significant role in rear-end crash risk situations, where a lower speed and standard deviation could lead to less rear-end risk situations at the same intersection. High difference in speed are more prone to cause rear-end crashes. With Respect to the RLR violations, the RLR risk analysis showed that the mean speed of the leading vehicle has important influence on the RLR risk in the typical intersection simulation scenarios as well as intersections with the flashing green phases' simulation scenario.Moreover, the findings indicated that the flashing green could not effectively reduce the risk probabilities. The pavement marking countermeasure had positive effects on reducing the risk probabilities if a platoon's mean speed was not under the speed used for designing the pavement marking. Otherwise, the risk probabilities for the intersection would not be reduced because of the increase in the RLR rate. The simulation results showed that the scenario with the pavement marking and an auxiliary indication countermeasure, which adds a flashing indication next to the pavement marking, had less risky situations than the other scenarios with the same speed distribution. These findings suggested the effectiveness of the pavement marking and an auxiliary indication countermeasure to reduce both rear-end collisions and RLR violations than other countermeasures.
Show less - Date Issued
- 2014
- Identifier
- CFE0005562, ucf:50291
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005562
- Title
- A COMPARATIVE ANALYSIS OF GREEN ROOF DESIGNS INCLUDING DEPTH OF MEDIA, DRAINAGE LAYER MATERIALS, AND POLLUTION CONTROL MEDIA.
- Creator
-
Kelly, Matt, Cooper, C. David, University of Central Florida
- Abstract / Description
-
Population growth has lead to an increase in development and impervious areas in urban settings. Post-development conditions cause several problems for stormwater management such as limited space for stormwater storage systems and the conveyance of pollution picked up by runoff to near by water bodies. Green Roofs with cisterns have been shown to attenuate the peak flow of storm events and reduce the pollution load leaving a site and entering nearby water bodies. The purpose of this research...
Show morePopulation growth has lead to an increase in development and impervious areas in urban settings. Post-development conditions cause several problems for stormwater management such as limited space for stormwater storage systems and the conveyance of pollution picked up by runoff to near by water bodies. Green Roofs with cisterns have been shown to attenuate the peak flow of storm events and reduce the pollution load leaving a site and entering nearby water bodies. The purpose of this research is to expand the available research data on green roofs with cisterns by investigating the water quality and hydrology effects of different green roof designs including depth of media, an additional pollution control layer beneath the growth media, and different drainage layer materials. Furthermore, a comparison study is performed on the cistern water quality, direct filtrate water quality, and control roof filtrate water quality. Results show that phosphorus concentrations are lower when using a pollution control layer beneath the growing media, and that evapotransporation and filtrate factor values from the 4-inch media and the 8-inch media are approximately equal for one year. However, hydrograph results show that the 8-inch media design has a lower peak flow and longer attenuation when compared to the 4-inch media design for a single storm event. Furthermore, the drainage layer material has no significant effect on the water quality or hydrology of the green roof discharge. The data also emphasizes the importance and effectiveness of the incorporation of a cistern into a green roof system.
Show less - Date Issued
- 2008
- Identifier
- CFE0002107, ucf:47552
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002107
- Title
- A COMPARATIVE ANALYSIS OF JOB COMPETENCY EXPECTATIONS FOR NEW HIRES: THE RELATIVE VALUE OF A HOSPITALITY MANAGEMENT DEGREE.
- Creator
-
Ricci, Peter, Tubbs, LeVester, University of Central Florida
- Abstract / Description
-
ABSTRACT This study compared lodging managers' job competency expectations for newly hired employees in possession of four-year (baccalaureate) degrees from a college or university. Lodging managers mentally separated new hires into two distinct categories when rating the importance of specific job competencies: 1) new hires in possession of a hospitality management baccalaureate degree, and 2) new hires in possession of a non-hospitality management baccalaureate degree. Lodging managers who...
Show moreABSTRACT This study compared lodging managers' job competency expectations for newly hired employees in possession of four-year (baccalaureate) degrees from a college or university. Lodging managers mentally separated new hires into two distinct categories when rating the importance of specific job competencies: 1) new hires in possession of a hospitality management baccalaureate degree, and 2) new hires in possession of a non-hospitality management baccalaureate degree. Lodging managers who were current members of the Central Florida Hotel & Lodging Association (CFHLA) at the time of the survey participated and all were employed in the central Florida area at the time of the study. In the fall of 2004, lodging managers (N=156) were sent an electronic mail correspondence requesting participation. Usable responses were received from 137 lodging managers for a response rate of 87.82%. The survey instrument was developed from a literature review of hospitality job competencies and was refined to 3 content areas: knowledge, ability, and attitude. Research questions were designed to identify differences, if any, in lodging manager new hire expectations based upon several criteria: a) type of baccalaureate degree held by the new hire (hospitality management versus other field), b) gender of the manager, c) number of years the manager had worked in the lodging industry, d) whether or not the manager possessed a baccalaureate degree at the time of the survey, e) if the manager possessed a baccalaureate degree, whether the degree was hospitality or non-hospitality specific, and, f) the type of lodging facility employing the manager at the time of questionnaire completion. These comparisons were made between the two groups of new-hires with baccalaureate hospitality degrees and new-hires with non-hospitality baccalaureate degrees. Consistently, lodging managers rated higher expectations for new-hires when the newly hired employees possessed a baccalaureate degree in hospitality or lodging management versus a non-hospitality discipline. Ramifications of these findings are discussed pursuant to higher education hospitality programs, the lodging industry, and human resource professionals recruiting future lodging managers. Future research is suggested utilizing a wider regional, national, and/or international sample.
Show less - Date Issued
- 2005
- Identifier
- CFE0000343, ucf:46304
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000343
- Title
- A Comparative Analysis of Present and Past Participial Adjectives and their Collocations in the Corpus of Contemporary American English (COCA).
- Creator
-
Reilly, Natalia, Folse, Keith, Mihai, Florin, Vitanova-Haralampiev, Gergana, University of Central Florida
- Abstract / Description
-
ESL grammar books have lists of present and past participial adjectives based on author intuition rather than actual word frequency. In these textbooks, the (-)ing and (-)ed participial adjectives derived from transitive verbs of state and emotion are presented in pairs such as interesting/interested, boring/bored, or surprising/surprised. This present study used the Corpus of Contemporary American English http://corpus.byu.edu/coca/ (COCA) to investigate the overall frequency of participial...
Show moreESL grammar books have lists of present and past participial adjectives based on author intuition rather than actual word frequency. In these textbooks, the (-)ing and (-)ed participial adjectives derived from transitive verbs of state and emotion are presented in pairs such as interesting/interested, boring/bored, or surprising/surprised. This present study used the Corpus of Contemporary American English http://corpus.byu.edu/coca/ (COCA) to investigate the overall frequency of participial adjectives in use as well as their frequency within certain varieties of contexts. The results have shown that among most frequently used participial adjectives there are not only the participial adjectives derived from transitive verbs of psychological state, such as interesting/interested, but also the participial adjectives derived from transitive verbs of action with their intransitive equivalents, such as increasing/increased. The data also revealed that many participial adjectives lack corresponding counterparts and thus cannot be presented in (-)ing/-ed or -en pairs (e. g., existing, ongoing, concerned, supposed). Finally, a majority of the differences between participial adjectives, including the differences between present (-ing) and past (-ed or -en) participial adjectives, are reflected in their collocations. This study suggests that a new approach of teaching participial adjectives along with their collocations in relation to their frequencies in particular contexts can help second language learners develop awareness of how and when these participial adjectives should be used to convey an individual's intended meaning in a native-like manner.
Show less - Date Issued
- 2013
- Identifier
- CFE0005051, ucf:49967
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005051
- Title
- A comparative analysis of public school collective bargaining agreements in Florida.
- Creator
-
Berk, Aliza, Bartee, RoSusan, Gordon, William, Doherty, Walter, Edyburn, Dave, University of Central Florida
- Abstract / Description
-
This study examines the terms and conditions found in the 67 Florida public school collective bargaining agreements. Such collective bargaining agreements are negotiated between two parties, the teacher unions and their employers, under Florida Statute 447. The purpose of this mixed-methods study, conducted using both qualitative and quantitative research methods, is as follows: 1) to determine the extent to which CBA provisions exist within the master contracts of Florida teachers (2016-2017...
Show moreThis study examines the terms and conditions found in the 67 Florida public school collective bargaining agreements. Such collective bargaining agreements are negotiated between two parties, the teacher unions and their employers, under Florida Statute 447. The purpose of this mixed-methods study, conducted using both qualitative and quantitative research methods, is as follows: 1) to determine the extent to which CBA provisions exist within the master contracts of Florida teachers (2016-2017) and; 2) to determine the extent to which, if any, collective bargaining provisions vary among school districts (i.e. district size, district performance, district locale). The study finds that none of the eight desirable provisions were present in all 66 collective bargaining agreements indicating that collective bargaining agreements vary in terms of the inclusion of desirable provisions for teachers. The study also finds that that spatial relationship plays a role in determining bargaining outcomes. The results of this study provide insight into the terms and conditions of collective bargaining agreements in Florida; thereby providing Florida school districts with information to construct the best possible competitive contracts in the future, which would then attract top talent as well as to protect the best interests of their districts.
Show less - Date Issued
- 2019
- Identifier
- CFE0007431, ucf:52711
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007431
- Title
- A COMPARATIVE ANALYSIS OF STUDENT ACHIEVEMENT IN FLORIDA CHARTER AND NON-CHARTER PUBLIC HIGH SCHOOLS 2007-2009.
- Creator
-
Sommella, Shannon, Taylor, Rosemarye, University of Central Florida
- Abstract / Description
-
The purpose of this study was to determine if any relationship existed between the change in developmental scale scores (DSS) on the Florida Comprehensive Assessment Test (FCAT) for reading and mathematics, in selected Florida school districts among charter and non-charter public high schools, for grades 9 and 10. This study also investigated if any relationship existed in student achievement based on student demographics (gender, economically disadvantaged, primary home language (ELL) and...
Show moreThe purpose of this study was to determine if any relationship existed between the change in developmental scale scores (DSS) on the Florida Comprehensive Assessment Test (FCAT) for reading and mathematics, in selected Florida school districts among charter and non-charter public high schools, for grades 9 and 10. This study also investigated if any relationship existed in student achievement based on student demographics (gender, economically disadvantaged, primary home language (ELL) and ethnicity), and examined if there was a difference in professional demographics of faculty (advanced degrees, teachers' average years of teaching experience, and percent of courses taught by out of field teachers gender), among charter and non-charter public high schools in the state of Florida. School data were analyzed from 234 charter and non-charter public high schools, within 15 districts across the state of Florida, for the years 2007-2009. The findings of this research suggest charter high schools in the state of Florida are not keeping the pace with their traditional public high school counterparts. Over a three year period, charter high schools had significantly lower developmental scale scores on the FCAT, in both reading and mathematics, than non-charter public high schools. The findings also suggest that student demographics, with respect to male gender, economically disadvantaged, and ELL, combined with charter school status, negatively impact student achievement as measured by DSS. The disparity noted with regard to faculty demographics between charter and non-charter public high schools, only touches on some considerable differences between the two school types; more information is needed on the variations so parents and students can make informed choices. For future research, replication of this study with an expanded sample size of charter schools and a longer period of time for data collection was recommended. Separate studies are recommended on the differences between charter and non-charter public schools with regard to instructional time, curriculum or grade levels offered, the differences between parent and student perceptions, and the differences between funding and principal background as it relates to student achievement.
Show less - Date Issued
- 2010
- Identifier
- CFE0003476, ucf:48985
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003476
- Title
- A Comparative Analysis of Top Performing Countries in Eighth Grade Mathematics as Measured by 2011 Trends in International Mathematics and Science Study.
- Creator
-
Wilson, Courtney, Murray, Barbara, Murray, Kenneth, Doherty, Walter, Hutchinson, Cynthia, University of Central Florida
- Abstract / Description
-
The focus of this research was to shed light on factors contributing to global international rankings in mathematics released by the 2011 administration of the Trends in International Mathematics and Science Study. This study focused on factors contributing to the global ranking of international scores in mathematics. Although students in the United States performed below students in the other sample countries (Singapore, Japan, and the Republic of Korea), American students scored within one...
Show moreThe focus of this research was to shed light on factors contributing to global international rankings in mathematics released by the 2011 administration of the Trends in International Mathematics and Science Study. This study focused on factors contributing to the global ranking of international scores in mathematics. Although students in the United States performed below students in the other sample countries (Singapore, Japan, and the Republic of Korea), American students scored within one standard deviation of the top performer, the Republic of Korea. The study also revealed that although other countries had their brightest and most advantaged students participate in the assessment, participating students in the United States were disproportionately disadvantaged to the proportion of United States' citizens. Another contributing factor of student success revealed in this study was the size and form of government and financing of the participating countries. While Singapore, the Republic of Korea, and Japan have education systems governed and financed by national governments, the United States education system is primarily governed and financed by 50 state governments.
Show less - Date Issued
- 2014
- Identifier
- CFE0005276, ucf:50555
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005276
- Title
- A Comparative Evaluation of FDSA,GA, and SA Non-Linear Programming Algorithms and Development of System-Optimal Dynamic Congestion Pricing Methodology on I-95 Express.
- Creator
-
Graham, Don, Radwan, Ahmed, Abdel-Aty, Mohamed, Al-Deek, Haitham, Uddin, Nizam, University of Central Florida
- Abstract / Description
-
As urban population across the globe increases, the demand for adequatetransportation grows. Several strategies have been suggested as a solution to the congestion which results from this high demand outpacing the existing supply of transportation facilities.High (-)Occupancy Toll (HOT) lanes have become increasingly more popular as a feature on today's highway system. The I-95 Express HOT lane in Miami Florida, which is currently being expanded from a single Phase (Phase I) into two Phases,...
Show moreAs urban population across the globe increases, the demand for adequatetransportation grows. Several strategies have been suggested as a solution to the congestion which results from this high demand outpacing the existing supply of transportation facilities.High (-)Occupancy Toll (HOT) lanes have become increasingly more popular as a feature on today's highway system. The I-95 Express HOT lane in Miami Florida, which is currently being expanded from a single Phase (Phase I) into two Phases, is one such HOT facility. With the growing abundance of such facilities comes the need for in- depth study of demand patterns and development of an appropriate pricing scheme which reduces congestion.This research develops a method for dynamic pricing on the I-95 HOT facility such as to minimize total travel time and reduce congestion. We apply non-linear programming (NLP) techniques and the finite difference stochastic approximation (FDSA), genetic algorithm (GA) and simulated annealing (SA) stochastic algorithms to formulate and solve the problem within a cell transmission framework. The solution produced is the optimal flow and optimal toll required to minimize total travel time and thus is the system-optimal solution.We perform a comparative evaluation of FDSA, GA and SA non-linear programmingalgorithms used to solve the NLP and the ANOVA results show that there are differences in the performance of the NLP algorithms in solving this problem and reducing travel time. We then conclude by demonstrating that econometric forecasting methods utilizing vector autoregressive (VAR) techniques can be applied to successfully forecast demand for Phase 2 of the 95 Express which is planned for 2014.
Show less - Date Issued
- 2013
- Identifier
- CFE0005000, ucf:50019
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005000
- Title
- A COMPARATIVE INVESTIGATION OF CAREER READINESS AND DECIDEDNESS IN FIRST YEAR STEM MAJORING STUDENTS PARTICIPATING IN A STEM MENTORING PROGRAM IMBEDDED IN A LIVING-LEARNING COMMUNITY WITH FOCUSED DATA ON FEMALE STEM STUDENTS.
- Creator
-
Ramlakhan, Nirmala, Jeanpierre, Bobby, Boote, David, Hynes, Michael, Daire, Andrew, University of Central Florida
- Abstract / Description
-
Female mentoring success was investigated as an undergraduate intervention utilizing career development practices to reduce dysfunctional career thinking and STEM major retention in first year freshmen females within a living-learning community. Repeated measures MANOVAs and canonical correlations in the causal comparative research design evaluated mentoring's influence on first year females. Male voluntary participants (n = 126) formulated the comparison group, and female voluntary...
Show moreFemale mentoring success was investigated as an undergraduate intervention utilizing career development practices to reduce dysfunctional career thinking and STEM major retention in first year freshmen females within a living-learning community. Repeated measures MANOVAs and canonical correlations in the causal comparative research design evaluated mentoring's influence on first year females. Male voluntary participants (n = 126) formulated the comparison group, and female voluntary participants (n = 75) filled the treatment group. Repeated measure multivariate analyses of variances compared differences between the interaction of mentoring and gender over time on dysfunctional career thinking using two assessments: Career Thoughts Inventory (CTI) and Career Decision Scale (CDS) and their five subscales (decision-making confusion, commitment anxiety, external conflict, certainty and indecision). Canonical correlations analyzed the effect participation rates had on student change scores on the CTI and CDS, indicating mentoring intervention effects on reducing dysfunctional career thinking and decidedness. Conclusions included: (a) females had higher levels of dysfunctional career thinking than males; (b) overtime both groups decreased dysfunctional thoughts,and solidifying their STEM career choices; (c) females had reduced levels of career decidedness compared to males; (d) both groups increased certainty overtime, solidifying their STEM career choice, and (e) when the STEM career choice was made, female certainty was more solidified than males. The study adds to the career development research within STEM at the undergraduate level providing colleges and universities with a structured first year female mentoring program in STEM. The GEMS model may be ideal for colleges and universities utilizing living-learning communities to increase underrepresented female retention and those without STEM career planning courses.?
Show less - Date Issued
- 2012
- Identifier
- CFE0004586, ucf:49191
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004586
- Title
- A COMPARATIVE STATIC ANALYSIS FOR INVASIVE SPECIES MANAGEMENT UNDER RISK NEUTRAL PREFERENCES.
- Creator
-
Safford, Pamela, Finnoff, David, University of Central Florida
- Abstract / Description
-
This thesis investigates the optimal ex-ante mix of self-protection and self-insurance technologies employed to reduce the risk of biological invaders in the presence of exogenous variables within the probability and damage functions. This is accomplished by using a theoretical endogenous risk model that extends previously developed frameworks. This thesis contributes to the previous work in two ways. (1) employing a general framework with simultaneous decision making over self-protection and...
Show moreThis thesis investigates the optimal ex-ante mix of self-protection and self-insurance technologies employed to reduce the risk of biological invaders in the presence of exogenous variables within the probability and damage functions. This is accomplished by using a theoretical endogenous risk model that extends previously developed frameworks. This thesis contributes to the previous work in two ways. (1) employing a general framework with simultaneous decision making over self-protection and self-insurance, this thesis analyzes how each parameter including income, the costs of each activity, an exogenous factor that affects only the probability of an invasion, and a separate exogenous factor that affects only the damages influence the level of self-protection and self-insurance. (2) the comparative static results are derived in the benchmark case of risk neutral preferences and qualitatively compared to an extended case of risk averse preferences. The results of the analysis indicate that under risk neutral preferences the signs of the comparative statics are unambiguous while under risk aversion the results are not clearly defined. Thus, the ambiguity of signs in the latter case can be attributed to the unobservable utility terms present under risk averse preferences. Therefore, it can be concluded that the model is not capable of yielding a decision criteria that will hold universally because the results are dependent on the nature of the risk averse curve
Show less - Date Issued
- 2004
- Identifier
- CFE0000156, ucf:46172
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000156
- Title
- A COMPARATIVE STUDY OF ANT COLONY OPTIMIZATION.
- Creator
-
Becker, Matthew, Mohapatra, Ram, University of Central Florida
- Abstract / Description
-
Ant Colony Optimization (ACO) belongs to a class of biologically-motivated approaches to computing that includes such metaheuristics as artificial neural networks, evolutionary algorithms, and artificial immune systems, among others. Emulating to varying degrees the particular biological phenomena from which their inspiration is drawn, these alternative computational systems have succeeded in finding solutions to complex problems that had heretofore eluded more traditional techniques. Often,...
Show moreAnt Colony Optimization (ACO) belongs to a class of biologically-motivated approaches to computing that includes such metaheuristics as artificial neural networks, evolutionary algorithms, and artificial immune systems, among others. Emulating to varying degrees the particular biological phenomena from which their inspiration is drawn, these alternative computational systems have succeeded in finding solutions to complex problems that had heretofore eluded more traditional techniques. Often, the resulting algorithm bears little resemblance to its biological progenitor, evolving instead into a mathematical abstraction of a singularly useful quality of the phenomenon. In such cases, these abstract computational models may be termed biological metaphors. Mindful that a fine line separates metaphor from distortion, this paper outlines an attempt to better understand the potential consequences an insufficient understanding of the underlying biological phenomenon may have on its transformation into mathematical metaphor. To that end, the author independently develops a rudimentary ACO, remaining as faithful as possible to the behavioral qualities of an ant colony. Subsequently, the performance of this new ACO is compared with that of a more established ACO in three categories: (1) the hybridization of evolutionary computing and ACO, (2) the efficacy of daemon actions, and (3) theoretical properties and convergence proofs.
Show less - Date Issued
- 2006
- Identifier
- CFE0001192, ucf:46844
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001192
